I found that WiFi is draining too much battery power on my laptop.
The system has
Linux Mint 14 (32 bit) and runs with its default kernel,
3.5.0-17-generic. The driver in use is
ath9k and runs on
Intel i3 processor.
It takes just 30 minutes to drain a fully charged battery.
By checking iwconfig details, I can tell that
Power Management is turned on.
Driver and device details:
@mintbox ~ $ sudo lsmod | grep -i ath [sudo] password for : ath9k 116549 0 mac80211 461161 1 ath9k ath9k_common 13783 1 ath9k ath9k_hw 376155 2 ath9k,ath9k_common ath 19187 3 ath9k,ath9k_common,ath9k_hw cfg80211 175375 3 ath9k,mac80211,ath @mintbox ~ $ @mintbox ~ $ lspci -vvv | grep -A 10 Wireless 02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) Subsystem: Foxconn International, Inc. T77H126.00 802.11bgn Wireless Half-size Mini PCIe Card Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at e7a00000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: ath9k Kernel modules: ath9k @mintbox ~ $
I understand that my laptop will use more power with WiFi, but I am looking for suggestions on tweaks that can help, like putting WiFi in stand by when not in use. I can compromise on network speed to an extent.